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Thu, 26 Feb 2026 20:25:38 -0800 (PST) Date: Thu, 26 Feb 2026 20:25:38 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69a11cc2.050a0220.3a55be.0010.GAE@google.com> Subject: [moderation/CI] Re: ext4: test if inode's all dirty pages are submitted to disk From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v1] ext4: test if inode's all dirty pages are submitted to disk https://lore.kernel.org/all/20260226110718.1904825-1-yebin@huaweicloud.com * [PATCH] ext4: test if inode's all dirty pages are submitted to disk and found the following issue: WARNING in ext4_evict_inode Full report is available here: https://ci.syzbot.org/series/8f9434e5-a73c-4b31-be9f-e9b76f1c2596 *** WARNING in ext4_evict_inode tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: f4d0ec0aa20d49f09dc01d82894ce80d72de0560 arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/7053c6f2-2ee6-4a1d-9f74-d2f56facd9f9/config C repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/c_repro syz repro: https://ci.syzbot.org/findings/4f7c2b91-8121-443d-9a4f-991feda8057c/syz_repro ------------[ cut here ]------------ mapping_tagged(&inode->i_data, PAGECACHE_TAG_DIRTY) WARNING: fs/ext4/inode.c:191 at ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191, CPU#1: syz-executor/5915 Modules linked in: CPU: 1 UID: 0 PID: 5915 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:ext4_evict_inode+0xbdc/0xf10 fs/ext4/inode.c:191 Code: ba 2c 02 00 48 8b bc 24 a0 00 00 00 e8 bd 49 14 00 e9 71 fe ff ff e8 43 63 40 ff 90 0f 0b 90 e9 e6 f4 ff ff e8 35 63 40 ff 90 <0f> 0b 90 e9 f2 f5 ff ff e8 27 63 40 ff 48 8d 3d 50 df 92 0d 67 48 RSP: 0018:ffffc900048b79a0 EFLAGS: 00010293 RAX: ffffffff8285287b RBX: ffff88811d980298 RCX: ffff8881027d8000 RDX: 0000000000000000 RSI: 0000000004000000 RDI: 0000000000000000 RBP: ffffc900048b7ab0 R08: ffffffff901181b7 R09: 1ffffffff2023036 R10: dffffc0000000000 R11: fffffbfff2023037 R12: 1ffff92000916f44 R13: dffffc0000000000 R14: ffff88811d9804b8 R15: 0000000004000000 FS: 000055557d541500(0000) GS:ffff8882a9464000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00003e720 CR3: 000000010f9d2000 CR4: 00000000000006f0 Call Trace: evict+0x61e/0xb10 fs/inode.c:846 dispose_list fs/inode.c:888 [inline] evict_inodes+0x75a/0x7f0 fs/inode.c:942 generic_shutdown_super+0xaa/0x2d0 fs/super.c:632 kill_block_super+0x44/0x90 fs/super.c:1725 ext4_kill_sb+0x68/0xb0 fs/ext4/super.c:7459 deactivate_locked_super+0xbc/0x130 fs/super.c:476 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf3c79d897 Code: a2 c7 05 5c ee 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffe2362cef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fcf3c831ef0 RCX: 00007fcf3c79d897 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe2362cfb0 RBP: 00007ffe2362cfb0 R08: 00007ffe2362dfb0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2362e040 R13: 00007fcf3c831ef0 R14: 000000000000f11c R15: 00007ffe2362e080 *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. The email will later be sent to: [adilger.kernel@dilger.ca jack@suse.cz linux-ext4@vger.kernel.org tytso@mit.edu yebin@huaweicloud.com] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid